Application note: Guidelines for Quantum Dot DFB Laser Coupling in Optical Subassemblies
Innolume has published a new Application Note detailing its quantum dot (QD) distributed feedback (DFB) lasers operating in the O-Band range. These lasers deliver continuous-wave output powers of up to 150 mW, with high efficiency around 20%, low relative intensity noise below −150 dB/Hz, and are suitable for 400G, 800G, and 1.6T transceiver applications across a temperature range of 0 to 85°C. Innolume currently offers a broad selection of chip configurations featuring various output powers and beam profiles, enabling optimized optical coupling to photonic integrated circuits (PICs) and optical fibers. The latest study offers detailed guidance on managing QD-DFB laser beams effectively and achieving coupling efficiencies of up to 94 % in optical subassemblies.
What's Inside?
- Laser Beam Characteristics of QD-DFB lasers
- Coupling to PICs & Fibers
- Design & Manufacturing Considerations
This Application Note serves as an important resource for scientists and engineers, demonstrating that high-efficiency coupling of QD-DFB lasers to PICs and optical fibers can be achieved with use of proposed customized two-lens systems. Innolume provides design assistance and tailored solutions to facilitate this process.
Learn more about the product itself:
